<template>
  <div class='redis-container'>
    <el-row>
      <el-col :span='24' class='card-box'>
        <el-card>
          <div slot='header'><span>基本信息</span></div>
          <div class='el-table el-table--enable-row-hover el-table--medium'>
            <table cellspacing='0' style='width: 100%' class='redis-table-box'>
              <tbody>
              <tr>
                <td>
                  <div class='cell'>Redis版本</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.redis_version }}</div>
                </td>
                <td>
                  <div class='cell'>运行模式</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.redis_mode === 'standalone' ? '单机' : '集群' }}
                  </div>
                </td>
                <td>
                  <div class='cell'>端口</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.tcp_port }}</div>
                </td>
                <td>
                  <div class='cell'>客户端数</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.connected_clients }}</div>
                </td>
              </tr>
              <tr>
                <td>
                  <div class='cell'>运行时间(天)</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.uptime_in_days }}</div>
                </td>
                <td>
                  <div class='cell'>使用内存</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.used_memory_human }}</div>
                </td>
                <td>
                  <div class='cell'>内存消耗峰值(字节)</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.used_memory_peak }}</div>
                </td>
                <td>
                  <div class='cell'>内存配置</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.maxmemory_human }}</div>
                </td>
              </tr>
              <tr>
                <td>
                  <div class='cell'>占用系统CPU</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ parseFloat(cache.info.used_cpu_sys).toFixed(2) }}</div>
                </td>
                <td>
                  <div class='cell'>占用用户CPU</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ parseFloat(cache.info.used_cpu_user).toFixed(2) }}</div>
                </td>
                <td>
                  <div class='cell'>后台占用用户CPU</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ parseFloat(cache.info.used_cpu_user_children).toFixed(2) }}
                  </div>
                </td>
                <td>
                  <div class='cell'>后台占用系统CPU</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ parseFloat(cache.info.used_cpu_sys_children).toFixed(2) }}
                  </div>
                </td>
              </tr>
              <tr>
                <td>
                  <div class='cell'>等待阻塞命令</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.blocked_clients }}</div>
                </td>
                <td>
                  <div class='cell'>每秒执行命令数量</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.instantaneous_ops_per_sec }}</div>
                </td>
                <td>
                  <div class='cell'>缓存击中次数</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.keyspace_hits }}</div>
                </td>
                <td>
                  <div class='cell'>缓存未击中次数</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.keyspace_misses }}</div>
                </td>
              </tr>
              <tr>
                <td>
                  <div class='cell'>AOF是否开启</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.aof_enabled === '0' ? '否' : '是' }}</div>
                </td>
                <td>
                  <div class='cell'>RDB是否成功</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.rdb_last_bgsave_status }}</div>
                </td>
                <td>
                  <div class='cell'>Key数量</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.dbSize'>{{ cache.dbSize }}</div>
                </td>
                <td>
                  <div class='cell'>网络入口/出口</div>
                </td>
                <td>
                  <div class='cell' v-if='cache.info'>{{ cache.info.instantaneous_input_kbps
                    }}kps/{{ cache.info.instantaneous_output_kbps }}kps
                  </div>
                </td>
              </tr>
              </tbody>
            </table>
          </div>
        </el-card>
      </el-col>
      <el-col :span='12' class='card-box'>
        <el-card>
          <div slot='header'><span>命令统计</span></div>
          <div class='el-table el-table--enable-row-hover el-table--medium'>
            <div ref='commandstats' style='height: 420px' />
          </div>
        </el-card>
      </el-col>

      <el-col :span='12' class='card-box'>
        <el-card>
          <div slot='header'>
            <span>内存信息</span>
          </div>
          <div class='el-table el-table--enable-row-hover el-table--medium'>
            <div ref='usedmemory' style='height: 420px' />
          </div>
        </el-card>
      </el-col>
    </el-row>
  </div>
</template>

<script>
import * as echarts from 'echarts'

require('echarts/theme/macarons')
export default {
  name: 'Redis',
  data() {
    return {
      // 统计命令信息
      commandstats: null,
      // 使用内存
      usedmemory: null,
      // cache 信息
      cache: []
    }
  },
  created() {
    this.getRedisInfo()
  },
  methods: {
    getRedisInfo() {
      this.axios.get('/api/monitor/redis').then(({ data }) => {
        this.cache = data.data
        this.commandstats = echarts.init(this.$refs.commandstats, 'macarons')
        const commandStats = []
        data.data.commandStats.forEach(row => {
          commandStats.push({
            name: row.command,
            value: row.calls
          })
        })
        this.commandstats.setOption({
          legend: {
            type: 'scroll',
            orient: 'vertical',
            right: 10,
            top: 'center'
          },
          tooltip: {
            trigger: 'item',
            formatter: '{a} <br/>{b} : {c} ({d}%)'
          },
          series: [
            {
              name: '命令',
              type: 'pie',
              roseType: 'radius',
              radius: [15, 95],
              center: ['50%', '38%'],
              data: commandStats,
              animationEasing: 'cubicInOut',
              animationDuration: 1000
            }
          ]
        })
        this.usedmemory = echarts.init(this.$refs.usedmemory, 'macarons')
        this.usedmemory.setOption({
          tooltip: {
            formatter: '{b} <br/>{a} : ' + this.cache.info.used_memory_human
          },
          series: [
            {
              name: '峰值',
              type: 'gauge',
              min: 0,
              max: 1000,
              detail: {
                formatter: this.cache.info.used_memory_human
              },
              data: [
                {
                  value: parseFloat(this.cache.info.used_memory_human),
                  name: '内存消耗'
                }
              ]
            }
          ]
        })
      })
    }
  }
}
</script>

<style scoped>
.redis-table-box tbody tr td {
    border: 1px solid #ebeef5;
    padding: 8px 11px;
}

.redis-table-box tbody tr td:nth-child(2n+1) {
    background: #f5f7fa;
}

.redis-table-box tbody tr td:nth-child(2n) {
    color: #409EFF;
}
</style>
